Afterwards, Korpatsch rebuked the suggestion by 32nd seed Wang that she was "not a fair player".

Korpatsch said there had been two ball marks, one old and one new, but both were out - a claim supported by the chair umpire and Hawk-Eye.

"The chair umpire came down and showed the mark, and it was out. Also on the TV, they showed the Hawk-Eye and it was like 8mm out. She came on my side because she didn't believe it," Korpatsch said.

"At the end, we didn't have a handshake because she told me she's not OK with the ball marks.

"I can't say I'll gift her the point. I'm a bit surprised because we have a good relationship, we're not enemies.

"I didn't offer her my hand because that's not fair for me. She was unfair to come on my side, and I'm not an unfair player."